USB2512 Просмотр технического описания (PDF) - Unspecified

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USB2512

USB 2.0 Hi-Speed Hub Controller

Unspecified 

USB 2.0 Hi-Speed Hub Controller

Datasheet

Chapter 4 Block Diagram

To Upstream

VBUS

Upstream

USB Data

3.3 V

24 MHz

Crystal

To EEPROM or

SMBus Master

SDA SCL

Bus-

Power

Detect/

Vbus Pulse

Upstream

PHY

Repeater

Regulator

PLL

Serial

Interface

Engine

Serial

Interface

Controller

3.3 V

Regulator

CRFILT

... TT

TT

Port

#1

#x Controller

Routing & Port Re-Ordering Logic

PHY#1

... Port #1

OC Sense

Switch Driver/

LED Drivers

PHY#x

Port #x

OC Sense

Switch Driver/

LED Drivers

USB Data OC Port

Downstream Sense Power

Switch/

LED

Drivers

USB Data OC Port

Downstream Sense Power

Switch/

LED

Drivers

The ‘x’ indicates the number of available downstream ports: 2, 3, 4, or 7.

Figure 4.1 USB251x Hub Family Block Diagram

Note 4.1 USB2512A/USB2512Ai only supports a single transaction translator.

Note 4.2 The LED port indicators only apply to USB2513/13i/14/14i (48QFN only) and USB2517/17i.

SMSC USB251x

11

DATASHEET

Revision 1.1 (04-26-10)

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